Storage-battery electrode.



Nu. 647,753. Patented Abr. l7, I900. n. MACRAE. STIHIAGIE BATTERY ELECTRODE.

(Application filed Nov. 17, 1899.)

T (No Model.)

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' UNITED STATES PATENT omen.

RODERICK MACRAE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO YVILLIAM O. L. EGLIN, OF SAME PLACE.

v STO RAG E-BATTERY -ELECTRODE.

SPECIFICATION forming part of Letters Patent N 0. 647,753, dated April 17, 1900. I Appllcatlon'flled November 1'7, 1899. Serial No. 737,277- (No model .1

To all whom it may concern:

Be it known that I, RODERICK IVIACRAE, a

subject of the Queen of Great Britain, resids ing at Philadelphia, Pennsylvania, have invented certain new and useful Improvements in Storage-Battery Electrodes, of which the following is a full, clear, and exact descrip- My invention relates to electrodes for stor-.

age and other batteries; audit consists in the novel features of constructlon hereinafter described and claimed'=viZ. in the construction of the central elemental unit of the batteryplate and, second, in a specific combination therewith of two other unit-plates of the character described in pending'application filed by me, Serial No. 714,280, whereby small battery-plates may be constructed with increased economy and facility.

In the accompanying drawings, illustrating my invention, Figure 1 is a front elevation of my improved battery-electrode. Fig. 2 is a plan view of the device of Fig. 1, and Fig. 3 is a perspective view of the central elemental unit entering into the assembled and combined battery-plate shown in Fig. 1.' I

That feature of the device which consists in forming an integral slatted structure by uniting at the edges of their opposite ends a series of spaced slats or flat lead strips and building up thereon a solid edge portion by means of a solder mass, so as to form an integral structure, I do not claim herein, as it forms the subject of a separate and now pending application, Serial No. 712,270, 7 The novel elemental unit in the present device is shown in Fig. 3, and it consists of the series of short lead strips or plates, which are first spaced from each other by interposed or integral flanges arranged transversely, these spaced plates at being united at their end edges by a solder mass applied thereto,whereby an integral solid vertical edge piece is formed, as indicated at h h. In forming the elemental unit shown in Fig. 3, I proceed in the same way as far as thus stated; but having formed such solder edges h h the struc- 1 cation filed by me Serial No. 714,280 for the end units, (marked A A herein.) In said lastmentioned application the units forming the battery-plate are united to each other by embedding a conductingaud connecting wire in' the opposite coinciding semi-cylindrical grooves in said solid edge portions.

The chief value of the specific elemental unit herein described resides in the capability it furnishes of constructing a small threeunit battery-plate, in that by providing 1ongitudinal beads on its vertical edge portions be held thereto by solder portions 17 I), avoiding any necessity for the use of a central conducting and connecting wire, like the end wires 0 c, said beads m m furnishing a keying device coactingwith the open grooves in the plates A A. The said plates A A are pro= vided on one of their edges, as before, with conducting and connecting wires 0 G, lying in the open grooves thereof and soldered thereto, as indicated at B.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patient, is I 1. A unit-pla e for a battery-electrode, consisting of a centrally-slatted lead structure with continuous solid edge portions each of which is provided wit-h a longitudinal bead or flange m; substantially as described.

2. A battery-plate composed of a central unit-plate consisting of a slatted structure having solid edge portions exteriorly beaded longitudinally,in combination with a pair of unit-plates consisting of like slatted structures. with solid edge portions exteriorly grooved and adapted by their said grooves to the said beads will enter the semicylindrical grooves of the end unit-plates A A and will I l 'egi ste'r sii tht-vfhellen gitudinal Beads on the edge portions of the central unit pl ate; cenone ofthe gi'b'qv's 6f theend 'iifiib plh-tes; v with means such as solder"fastenings B to.

maintain the said parts in assembled 'tien; substantially'as described.

posi- In testimony whereof- I have hereunto affixed mysignatql ethislst; day of November,

I R'ODERIOK MACR'AE. HWitnessesz' I WALTER O. PUSEY,

- TLFENTON. 

